Fiestar 피에스타 is a girl group formed by LOEN Entertainment in 2012. The group was originally composed of six members: Jei, Cao Lu, Linzy, Hyemi, Yezi, and Cheska. Member Cheska officially departed from the group in March 2014. The group released their debut single, "Vista," on August 31, 2012.

Pre-debut

Prior to their debut, the members of Fiestar trained as a group for two years and individually for an average of four years.

Cao Lu had previously debuted as a soloist in China after winning a 2004 CCTV singing contest. She released the album Cat in 2005 under the stage name LuLu.

The group's leader, Jei, had previously been a model for online clothing stores and appeared in music videos including Infinite's "Paradise" and Bongshil Sister's "My Love." She also featured on Taw's "Happy Hours" under the stage name Joo.

Linzy had been a trainee under YG Entertainment and was intended to be a 2NE1 member and then a member of another YG girl group, before the band was scrapped before debut. In 2010, she recorded a song for the Korean drama "Obstetrics and Gynecology."

2012–2013

Before their official debut, Fiestar released a duet with label mate IU for Loen Entertainment's collective label album. The track was titled "Sea of Moonlight" and was a domestic chart success. They also collaborated with Tiger JK for the pre-release song "Wicked."

The group released their first official single, "Vista," on August 31, 2012. The tracks from the corresponding EP all charted on the K-pop Billboard Hot 100.

Fiestar's second single "We Don't Stop" was released on November 9, with the B-side track "Sweet Love" featuring ballad singer Kim Yeonwoo. Live promotions for the album began on "Music Bank" the following day. Alongside group promotions, Jei appeared in TVN's reality program "Romantic and Idol," and alongside IU for the comedy show "Gag Concert" along with Jei, Cao Lu, and Linzy. Vocalists Linzy and Hyemi appeared on KBS's "1000 Song Challenge," and the group as a whole made appearances on "Weekly Idol" and "Dream Team 2." They also endorsed HIM Magazine.

In 2013, Linzy played Sharpay Evans in the CJ E&M Korean musical adaptation of High School Musical, sharing the role with The Grace's Dana. The show's run began on July 2 at the Blue Square Samsung Card Hall. Fiestar also participated in a video series entitled "Fiestar's A-HA! For the Global K-Pop Fan" as well as endorsements for the Samsung Galaxy S4.

On August 27, a pre-release single, "Whoo!" featuring Eric Benét, was released online. Despite there being no live promotions for the single, it was a chart success.

In September, Loen Entertainment created the sub-label Collabodadi, under which Fiestar would continue to release their music. On November 1, Fiestar released the single "I Don't Know" from the EP Curious, making their stage comeback on "Music Core" the following day. Following promotions, the reality television show "Channel FIESTAR!" aired on SBS MTV.

2014–2015

On March 20, 2014, Loen Entertainment announced that Cheska would be leaving the group and would not be replaced by any new members, and Fiestar's comeback was scheduled for mid-July after being postponed due to the Sewol ferry tragedy.

On June 16, a single in collaboration between The Friends and Fiestar for the 2014 Brazil World Cup titled "I Love Korea" was released. On July 1, the music video for the single "One More" was released.

On March 4, 2015 Fiestar's first album Black Label was released with title track "You're Pitiful." Six months after the album's release, on September 22, Collabodadi was dissolved, with Loen Tree becoming the sole in-house label of Loen Entertainment. Fiestar returned to Loen Tree after a two-year run under Collabodadi. On December 17, Cao Lu appeared on "Radio Star" as a guest along with rapper Jessi, Got7's Jackson, and Lena Park as part of the Outsiders special. She gained national attention for her appearance on the program and became the number one trending topic on Naver, with Fiestar also trending.

2016–present

In February 2016, Cao Lu joined the lineup of the female version of the MBC reality program "Real Men." In March, Fiestar promoted the track "Mirror" from the six-track EP A Delicate Sense, which was in part produced by the group members.

On May 31, the group released a new digital single titled "Apple Pie."

Controversies

Fiestar's single "One More" was banned from broadcast by MBC for its supposedly risqué lyrics. While the song had originally passed scrutiny from the three major broadcasting stations (KBS, MBC, and SBS), backlash from public commentators forced the networks to review the song's content. While their representatives claimed that the song was innocuous, the group re-recorded the song and changed the lyrics. The controversy spawned from the lyrics prompted MBC to crack down further on songs with ambiguous or easily misconstrued lyrical content.

Trivia

The age gap between the eldest member, Cao Lu, and the maknae, Yezi, is 6 years, 11 months, and 27 days.

Three of the members, Cao Lu, Hyemi, and Yezi, were born in August.

Cao Lu, Jei, and Yezi are all Virgos.

Jei and Linzy were born in the Year of the Snake.

At 161 cm or 5'3½", Hyemi and Yezi are the shortest members.

At 168 cm or 5'6", Linzy is the tallest member, 7 cm taller than the shortest members.